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Sites of Special Scientific Interest Units (England)

Publisher
Natural England
Updated
13 July 2026
Topic
Not set
Licence
View licence information

Summary

Site Units are divisions of SSSIs. based on habitat, tenure and management, and are the basis for recording all information on SSSI Condition and management. They range in Area from 0.004ha up to 18,000ha and only overlap where SSSIs overlap. Boundaries are generally mapped against Ordnance Survey MasterMap. Attribution statement: © Natural England copyright. Contains Ordnance Survey data © Crown copyright and database right [year].

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Additional information

Source Metadata
XML, HTML
Date added
25 July 2025
Harvest GUID
1126e504-19c1-4e57-a54d-e2cdb3b762a5
Extent (Latitude)
55.7447° to 49.8625°
Extent (Longitude)
-6.41736° to 2.05827°
Spatial reference system
http://www.opengis.net/def/crs/EPSG/0/27700
Dataset reference date (creation)
2023-03-13
Dataset reference date (publication)
2016-05-01
Dataset reference date (revision)
2025-01-15
Frequency of update
asNeeded
Access constraints
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Responsible party
Natural England (pointOfContact)
ISO 19139 resource type
dataset
Metadata language
eng

Contact

Enquiries

data.services@naturalengland.org.uk

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Licence information

Open Government Licence

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All content is available under the Open Government Licence v3.0, except where otherwise stated.